Rotary oven



(Nomoael.)

C. J. BLOOM.

l ROTARY OVEN. No. 528,069. Patented Oct. 23, 1894.

Hill!! ne #mams PETERS cn.. Pumumo. wAsMmu'wN. o. c.

producing a ire box.

NiTEn STATES PATENT OFFICE.

CHARLES J. BLOOM, OF BURLINGTON JUNCTION, MISSOURI.

ROTARY ovl-1N.l

SPECIFICATION forming part of Letters Patent No. 528,069, dated October 23, 18,94.

Application filed May 3, 1894. Serial No. 509,905. (No model.) Y

.To a/ZZ whom t may con/cern:

Be it known that I, CHARLES J. BLOOM, a` citizen of the United States, residing at Burlington Junction, inthe county of Nodaway and State of Missouri, have invented certain new and useful Improvements in Rotary Ovens; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable,.others skilled in the art to which it appertainsto make and use the same. f My inventionlrelates toimprovements in ovens, the objects in view being toA produce an oven that is portable, cheaply constructed and simple, and which has increased capacity for the bakings of cakes, pastries, &c., either for domestic orbakers use, and which by reason of its construction will impart an even heating to all portions of the bakings con` tained therein, whereby advantageous results accrue. Other objects and advantages of the invention will appearin the following description and the novel-features thereof will be particularly pointed out in the claims. i

. Referring to the drawingsz--Figure lis af perspective view of an oven embodying .my` invention. Fig. 2 is a rearelevation of the same. Fig. 3 is a vertical longitudinal sec'- tional view thereof. Fig; 4 is a detail of one of the bake pans. i

Like numerals of reference indicate like parts in all the figures of the drawings.

. In the practice of my invention I construct an outer casing or cylinder of sheet metal and the same consists of an annularwall or drum 1, having front and rear heads 2 and 3 respectively which are secured to the casing and provided at their centers with openings 4 and 5 respectively. `The first mentioned opening is sufciently large to insert the bakings and bake-pans for containing the saine, while the latter opening is simply a bearing opening. The casing thus constructed is supported upon suitable frames 6 whose lower ends are bent to form feet and are bolted tol cross sills or supports 7. Between these frames the annular wall is provided with depending flanges 8 which are connected at their lower endsby a cross-piece 9, the whole This tire-box has supported within it a grate 10, and at one end is `"pipe 16 having a central outlet 17 common to annular series within the cylinder 19 is a se- 28 and has avertical portion orstandard 29 provided with a fuel opening 11 which is covered by a swinging door 12 having a draft opening 13 over which is arranged aslide 14. In the present instance it is intended that the oven` should be operated by the consumption of hard fuel, but it willbe obvious that soft `fuel may be used or gasas desired, in which case the fire-box maybe omitted or modied in `its construction to adapt it for the purpose.

The upper side of the casing is provided 'with front and rear flanged openings l5, the

two being connected byan inverted Ulshaped both elbows of the pipe. Arranged in the elthe exterior and therebyfaffordV a means by which said dampers may be manipulated.

Contained within the casing t thus constructed is a cylinder 19, and the same is of less diameter and length than the casing so 4 asto produce an intermediate space in con,- junction with the same. This cylinder is providedat its rear end with a shaft 2O which extends through the bearing 5,Y and at its front end" with a flanged openingr 21, the flange thereof extending through the opening 4 of the front of the casing. Arranged in ries of axially disposed rods 22, and suspended loosely and in a removable manner4 from each rod is a bake-pan 23. These bake-pans 23 have their ends formed triangularlyin the present instance, and at the centers of said ends are provided with hooks 24, which loosely engage `calcover 25, the same preferably hav'ingvat its apex a venttube 26. A horizontal frame 27 is located at therear of the tire-box, is suitably braced by braces arising therefrom. This standard 29 has au i upperbearing 30 in 'line with the opening N5 is provided with a sprocket-wheel 33, and a smaller sprocket-wheel 34 is arranged on the `the rods and may be readily disengaged from ICO end of the shaft 32, while between this latter sprocket-wheel and the standard 29 a larger sprocket-wheel 35 is located on said shaft 32.

A pair of bearing brackets 36 extend from the front and rear end walls of the casing and accommodate a counter-shaft 37 which extends in front and rear of the casing. The rear end of the counter-shaft is provided with a sprocket-wheel 38 and the front end thereof with a pulley or it may be a handwheel 39, by means .of which said shaft 37 may be operated. If it is design ed to operate the shaft by hand the hand-wheel 39 shown is employed, or if on the other hand it is to be operated by power apulley is substituted. A sprocket-chain 40 connects the sprocketwheel 38 with the large sprocket-wheel 35, and thus communicates motion from the counter-shaft 37 to the small shaft 32, and a sprocket-chain 31 con-nects the small sprocket 34 of the shaft 32 with the large sprocket 33 of the shaft 2O that projects from the rear end of the cylinder 19, so that as will be obvious motionis communicated from the countershaft 37 to the cylinder 19.

A curved bracket 42 surrounds the lower portion of the front opening 4 in the outer casing and is provided at its ends with loose rollers 43, see Fig. 1, which support the flange 21 of the lfront opening of the cylinder 19 whereby a bearing is produced for the front end of said cylinder.

This completes the construction of the oven and the operation of the same will be readily understood. The products of combustion pass up from the fire-box around the sides and ends of the inner cylinder to the pipe 16, and finally out of the pipe 17. The products may be directed in either direction by a manipulation of the dampers 18, and they may be contained within the oven any length of time by an adj ustment of said dampers so as to retard their egress. As before stated the pans containing the bakings are inserted through the opening 4 in the outer casing and through the flanged opening 21 of the cylinder 19, the pans being'hung successively upon the suspension rods 22, after which the cap or cover 25 is replaced upon the fiange 21 and the machine started.- In operation the machineis slowly revolved so that all bakings and all portions of each baking are subjected to the same degree of heat and as a consequence an even browning takes place within the pans.

I do not limit my invention to the precise details of construction herein shown and described, but hold that I may vary the same to vany degree and extent within the knowledge of the skilled mechanic.

`Having described my invention, what I claim ism 1. In an oven the combination with a casing having front and rear bearing openings, smoke-pipes and draft openings, of an inner cylinderhaving a shaft extending through the rear opening, and at its front end an opening havinga flange extending through the front opening of the casing, a cover for the ianged opening, bakepan supports arranged in the inner cylinder, and means for giving motion to ythe shaft of said cylinder, substantially as specified.

2. In an oven the combination with an external casing, a combustion-chamber communicating therewith, and a smoke-pipe, of an inner cylinder arranged for rotation in the casing and provided with an axial opening for giving access thereto, rods arranged parallel to the axis of and within the inner cylinder around said opening and bake-pans loosely suspended on the rods, and means for rotating'said inner` cylinder, substantially as specified.

3. In an oven the combination with an external casing having a smoke-pipe, and a combustion-chamber com municatin g with the cylinder of an inner cylinder journaled for rotation in the casing and having an axial opening, means for giving motion to the cylinder and around the opening, rods arranged annularly within the cylinder and bakepans having opposite end hooks for loosely and removably engaging the rods, substantially as specified. l

4. In an oven the combination with the outer casing having front and rear openings and a smoke-pipe, of an internal cylinder arranged in the casing and having a rear shaft extending through the rear opening of the casing and a front opening having a flange extending through the opening in the casing, a cap or cover arranged upon the flange in a removable manner and having a vent, a series of rods arranged within the cylinder around the opening, a series of bake-pans having hooks at their ends loosely suspended from the rods, and means for giving motion to the inner cylinder, substantially as specified.

5. In an oven the combination with an outer cylindrical casing having a rear bearing opening and a front opening, the U-shaped pipe having dampers at its ends and the common discharge at its center, of the inner cylinder 19 having the anged opening 21 and the removable cover, the shaft 2O extending from the inner cylinder through the rear opening of the casing, means for rotating the shaft, a curved bracket 42 and rollers`43 for supporting the flange of the inner cylinder, substantially as specified.

6. In an oven the combination with the outer casing having the supports 6, the depending tire-box between the supports and the discharge-pipes 16 and 17 having dampers 18, of the cylinder 19 having the suspension rods 22, the loose pans 23, the shaft 20, the Iianged opening 21, the cover 25 and the vent 26, the sprocket-wheel 33 on the shaft 20, the countershaft 37, means for operating the same, the gear 38 on the counter shaft, and means for IOO IIO

communicating motion from the sprocketwheel 38 to the sprocket-Wheel 33, substantially as specified.

7. In an oven the combination with the outer casing having front and rear bearings, the horizontal frame 27 having braces 28, the standard 29 arising therefrom having bearings 30 and 31, the brackets 36, the countershaft 37, means for rotating the same, the sprocket 38, the short shaft 32, the sprocketwheels 34 and 35 arranged thereon, the chain 40 connecting the sprockets 38 and 35, of the cylinder 19 arranged for rotation in the cas` ing and having the front flanged opening 21 provided with the cover 25, and the rear shaft I 5 2O arranged in the bearing 30 ofthe standard, y the sprocket-Wheel 33 and the sprocket-chain 41 connecting the Wheel 33 with the sprocket Wheel 34, substantially as specified.;

In testimony Whereot` I affix "my signature in 2 0 y presence of two Witnesses.

CHARLES J. BLOOM.

Witnesses:

H. B. WILLIAMS, E. F. BERRY. 

